Question

我要基于两个数据帧合并，如果一个数据帧中两个不同列的两个值位于另一个数据帧的列中

Answer 1

这是一个fuzzyjoin / stringr解决方案：

library(fuzzyjoin); library(stringr)
fuzzy_inner_join(df_b, df_a, 
                 by = c("full_sql" = "column_name"), 
                 match_fun = str_detect)

#                                                                        full_sql index          Table_name             column_name freq
#1 UPDATE DDADMIN.USER_MASTER SETTERMINATED_USER_FLAG=:C19, TERMINATION_DATE=:C21  3694 DDADMIN.USER_MASTER SETTERMINATED_USER_FLAG    2
#2 UPDATE DDADMIN.USER_MASTER SETTERMINATED_USER_FLAG=:C19, TERMINATION_DATE=:C21  3694 DDADMIN.USER_MASTER        TERMINATION_DATE    2
#3  UPDATE DDADMIN.USER_MASTER SETTERMINATED_USER_FLAG='N', TERMINATION_DATE=NULL  3695 DDADMIN.USER_MASTER SETTERMINATED_USER_FLAG    2
#4  UPDATE DDADMIN.USER_MASTER SETTERMINATED_USER_FLAG='N', TERMINATION_DATE=NULL  3695 DDADMIN.USER_MASTER        TERMINATION_DATE    2

根据两个数据框是否存在两个列值来组合两个数据框

1 个答案: